ALEXANDRIA, Va., July 21 -- United States Patent no. 12,686,771, issued on July 21, was assigned to SHIN-ETSU CHEMICAL Co. LTD. (Tokyo).
"Anti-fouling silicone composite sheet and method for performing prevention of graffiti using same" was invented by Keiji Imaizumi (Takasaki, Japan), Akihiro Endo (Annaka, Japan) and Masaki Moteki (Takasaki, Japan).
According to the abstract* released by the U.S. Patent & Trademark Office: "An anti-fouling silicone composite sheet including: a substrate layer containing a fluororesin; and a silicone adhesive layer stacked on one surface of the substrate layer, having a hardness of 5 or less as measured with an Asker C hardness tester, and having an adhesive force with respect to a mortar test piece of 5 ...